Patents by Inventor Cheng-Kuo Hsiao

Cheng-Kuo Hsiao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8148039
    Abstract: An aromatic silicon-containing compound has the formula: Ar—[X-L-SiRn(OR?)3-n]m where Ar represents an aromatic group, X represents a divalent or trivalent group; L represents a divalent linking group; R represents a hydrogen atom, an alkyl group or an aryl group; R? represents an alkyl group having 1 to 5 carbon atoms; n is an integer of from 0 to 2; and m is an integer of from 1 to 5. The aromatic silicon-containing compound can be used in electrophotographic photoreceptors, particularly in outmost protective layers of such electrophotographic photoreceptors.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: April 3, 2012
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, John F. Graham, Timothy P. Bender, Ah-Mee Hor, Yvan Gagnon, Cheng-Kuo Hsiao
  • Patent number: 7851113
    Abstract: Overcoat layers, which may be useful for reducing torque in electrophotographic photoreceptors, are provided. The overcoat layers include a polymer matrix having a particulate inorganic lubricant and a particulate fluoropolymer uniformly dispersed therein. Also provided are electrophotographic photoreceptors that include a substrate and the overcoat layers, electrophotographic imaging apparatuses that include such photoreceptors, and methods for forming the photoreceptors.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: December 14, 2010
    Assignee: Xerox Corporation
    Inventors: Timothy P. Bender, Nan-Xing Hu, John F. Graham, Yvan Gagnon, Cheng-Kuo Hsiao, Sandra J. Gardner, Kathy L. De Jong, James M. Markovics
  • Patent number: 7795462
    Abstract: An aromatic silicon-containing compound has the formula: Ar—[X-L-SiRn(OR?)3-n]m where Ar represents an aromatic group, X represents a divalent or trivalent group; L represents a divalent linking group; R represents a hydrogen atom, an alkyl group or an aryl group; R? represents an alkyl group having 1 to 5 carbon atoms; n is an integer of from 0 to 2; and m is an integer of from 1 to 5. The aromatic silicon-containing compound can be used in electrophotographic photoreceptors, particularly in outmost protective layers of such electrophotographic photoreceptors.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: September 14, 2010
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, John F. Graham, Timothy P. Bender, Ah-Mee Hor, Yvan Gagnon, Cheng-Kuo Hsiao
  • Publication number: 20100035169
    Abstract: An aromatic silicon-containing compound has the formula: Ar—[X-L-SiRn(OR?)3-n]m where Ar represents an aromatic group, X represents a divalent or trivalent group; L represents a divalent linking group; R represents a hydrogen atom, an alkyl group or an aryl group; R? represents an alkyl group having 1 to 5 carbon atoms; n is an integer of from 0 to 2; and m is an integer of from 1 to 5. The aromatic silicon-containing compound can be used in electrophotographic photoreceptors, particularly in outmost protective layers of such electrophotographic photoreceptors.
    Type: Application
    Filed: September 14, 2009
    Publication date: February 11, 2010
    Applicant: XEROX CORPORATION
    Inventors: Yu QI, Nan-Xing HU, John F. GRAHAM, Timothy P. BENDER, Ah-Mee HOR, Yvan GAGNON, Cheng-Kuo HSIAO
  • Patent number: 7560161
    Abstract: A surface-grafted material having an inorganic material, a linking group, and a charge transport moiety capable of transporting holes or electrons, and the charge transport moiety is grafted to a surface of the inorganic material via the linking group.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: July 14, 2009
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, Ah-Mee Hor, Cheng-Kuo Hsiao, Rafik O. Loutfy
  • Patent number: 7517928
    Abstract: Siloxane-containing materials that have been prepared by a sol-gel method and polymeric binder materials from interpenetrating networks. Silicon-containing layers including such interpenetrating networks are provided. Methods for preparing interpenetrating networks and silicon-containing layers including interpenetrating networks are also provided. In addition, photoreceptors and image-forming apparatus including such silicon-containing layers are provided.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: April 14, 2009
    Assignee: Xerox Corporation
    Inventors: Timothy P Bender, Barkev Keoshkerian, John F Graham, Yvan Gagnon, Cheng-Kuo Hsiao, Nan-Xing Hu
  • Patent number: 7470493
    Abstract: Provided are a silane-phenol compound, a crosslinked siloxane outmost protective layer thereof, and an electrophotographic imaging member such as photoreceptor. The silane-phenol compound comprises (i) a phenol group and (ii) a silane group selected from the group consisting of alkoxysilyl, arylalkoxysilyl, aryloxysilyl, alkylaryloxysilyl, and combination thereof. The crosslinked siloxane outmost protective layer comprises the product of hydrolysis and condensation of a silanized hole transport compound and the silane-phenol compound. The crosslinked protective outmost layer may be used to manufacture an electrophotographic imaging member such as photoreceptor with improved properties such as image quality and cleanability, etc.
    Type: Grant
    Filed: July 19, 2005
    Date of Patent: December 30, 2008
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, Yvan Gagnon, Cheng-Kuo Hsiao, Ah-Mee Hor
  • Patent number: 7439002
    Abstract: A silicone overcoat (SOC) layer having a crosslinked polysiloxane composition comprising a perfluoropolyether segment are disclosed. The polysiloxane composition is the product of the hydrolysis and condensation of a SOC formulation comprising a perfluoropolyether compound, an aromatic silicon-containing compound, and a silicon-containing hole transport compound. An electrophotographic imaging member having such a SOC layer has improved properties.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: October 21, 2008
    Assignee: Xerox Corporation
    Inventors: Nan-Xing Hu, John Graham, Ah-Mee Hor, Yvan Gagnon, Cheng-Kuo Hsiao
  • Publication number: 20080166643
    Abstract: Overcoat layers, which may be useful for reducing torque in electrophotographic photoreceptors, are provided. The overcoat layers include a polymer matrix having a particulate inorganic lubricant and a particulate fluoropolymer uniformly dispersed therein. Also provided are electrophotographic photoreceptors that include a substrate and the overcoat layers, electrophotographic imaging apparatuses that include such photoreceptors, and methods for forming the photoreceptors.
    Type: Application
    Filed: December 13, 2006
    Publication date: July 10, 2008
    Applicant: XEROX CORPORATION
    Inventors: Timothy P. Bender, Nan-Xing Hu, John F. Graham, Yvan Gagnon, Cheng-Kuo Hsiao, Sandra J. Gardner, Kathy L. De Jong, James M. Markovics
  • Patent number: 7378204
    Abstract: A photoconductive imaging member containing a photogenerating layer, and a charge transport layer, and wherein the charge transport layer is comprised of an arylamine containing a moiety that minimizes oxidation.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: May 27, 2008
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, Gregory McGuire, Cheng-Kuo Hsiao
  • Patent number: 7348447
    Abstract: Processes for preparing aromatic matrix materials by metal hydrosilylation followed by alcholysis are provided. Silicon-containing layers that contain such aromatic matrix materials are also provided, as well as electrophotographic photoreceptors and electrophotographic imaging apparatuses containing such silicon-containing layers.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: March 25, 2008
    Assignee: Xerox Corporation
    Inventors: Timothy P. Bender, John F. Graham, Yvan Gagnon, Cheng-Kuo Hsiao, Nan-Xing Hu, Yu Qi
  • Patent number: 7338739
    Abstract: A crosslinked siloxane composite overcoat for electrophotographic photoreceptors, containing at least one siloxane-containing compound, a resin and metal oxide particles; photoreceptors containing the crosslinked siloxane composite overcoat; and image process cartridge and image forming apparatuses containing photoreceptors containing the crosslinked siloxane composite overcoat.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: March 4, 2008
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, Timothy P. Bender, Yvan Gagnon, John Graham, Cheng-Kuo Hsiao, Ah-Mee Hor
  • Patent number: 7232633
    Abstract: An imaging member with a surface-grafted material having an inorganic material, a linking group, and a charge transport moiety capable of transporting holes or electrons, and the charge transport moiety is grafted to a surface of the inorganic material via the linking group, and further, an image forming apparatus having the imaging member.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: June 19, 2007
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, Ah-Mee Hor, Cheng-Kuo Hsiao, Rafik O Loutfy
  • Publication number: 20070106023
    Abstract: Siloxane-containing materials that have been prepared by a sol-gel method and polymeric binder materials from interpenetrating networks. Silicon-containing layers including such interpenetrating networks are provided. Methods for preparing interpenetrating networks and silicon-containing layers including interpenetrating networks are also provided. In addition, photoreceptors and image-forming apparatus including such silicon-containing layers are provided.
    Type: Application
    Filed: November 7, 2005
    Publication date: May 10, 2007
    Applicant: XEROX CORPORATION
    Inventors: Timothy Bender, Barkev Keoshkerian, John Graham, Yvan Gagnon, Cheng-Kuo Hsiao, Nan-Xing Hu
  • Publication number: 20070081830
    Abstract: Processes for preparing aromatic matrix materials by metal hydrosilylation followed by alcholysis are provided. Silicon-containing layers that contain such aromatic matrix materials are also provided, as well as electrophotographic photoreceptors and electrophotographic imaging apparatuses containing such silicon-containing layers.
    Type: Application
    Filed: October 11, 2005
    Publication date: April 12, 2007
    Applicant: Xerox Corporation
    Inventors: Timothy Bender, John Graham, Yvan Gagnon, Cheng-Kuo Hsiao, Nan-Xing Hu, Yu Qi
  • Publication number: 20070020539
    Abstract: Provided are a silane-phenol compound, a crosslinked siloxane outmost protective layer thereof, and an electrophotographic imaging member such as photoreceptor. The silane-phenol compound comprises (i) a phenol group and (ii) a silane group selected from the group consisting of alkoxysilyl, arylalkoxysilyl, aryloxysilyl, alkylaryloxysilyl, and combination thereof. The crosslinked siloxane outmost protective layer comprises the product of hydrolysis and condensation of a silanized hole transport compound and the silane-phenol compound. The crosslinked protective outmost layer may be used to manufacture an electrophotographic imaging member such as photoreceptor with improved properties such as image quality and cleanability, etc.
    Type: Application
    Filed: July 19, 2005
    Publication date: January 25, 2007
    Inventors: Yu Qi, Nan-Xing Hu, Yvan Gagnon, Cheng-Kuo Hsiao, Ah-Mee Hor
  • Patent number: 7166396
    Abstract: A photoconductive imaging member comprised of a substrate, a photogenerating layer, and thereover a charge transport layer comprised of a charge transport component or components, a polymer binder and metal oxide particles, wherein said metal oxide particles contain or are attached with or to a silane or a siloxane, or alternatively a polytetrafluoroethylene.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: January 23, 2007
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, Ah-Mee Hor, Cheng-Kuo Hsiao, Yvan Gagnon, John F. Graham, Liang-Bih Lin, Cuong Vong
  • Publication number: 20070015072
    Abstract: A silicone overcoat (SOC) layer having a crosslinked polysiloxane composition comprising a perfluoropolyether segment are disclosed. The polysiloxane composition is the product of the hydrolysis and condensation of a SOC formulation comprising a perfluoropolyether compound, an aromatic silicon-containing compound, and a silicon-containing hole transport compound. An electrophotographic imaging member having such a SOC layer has improved properties.
    Type: Application
    Filed: July 12, 2005
    Publication date: January 18, 2007
    Inventors: Nan-Xing Hu, John Graham, Ah-Mee Hor, Yvan Gagnon, Cheng-Kuo Hsiao
  • Publication number: 20060286472
    Abstract: A photoconductive imaging member containing a photogenerating layer, and a charge transport layer, and wherein the charge transport layer is comprised of an arylamine containing a moiety that minimizes oxidation.
    Type: Application
    Filed: June 15, 2005
    Publication date: December 21, 2006
    Inventors: Yu Qi, Nan-Xing Hu, Gregory McGuire, Cheng-Kuo Hsiao
  • Patent number: 7122283
    Abstract: A photoconductive member containing, for example, a substrate, a photogenerating layer, a charge transport layer and an overcoat layer wherein the overcoat layer is comprised of a crosslinked siloxane composite containing a caprolactone-siloxane.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: October 17, 2006
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Nan-Xing Hu, H. Bruce Goodbrand, Ah-Mee Hor, Cheng-Kuo Hsiao, Cuong Vong, Gregory McGuire